#ifndef __LINUX_DMI_WRAPPER_H
#define __LINUX_DMI_WRAPPER_H 1

#include <linux/version.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)

#include_next <linux/dmi.h>

#else  /* linux version >= 2.6.23 */

#ifndef __DMI_H__
#define __DMI_H__

#include <linux/list.h>

enum dmi_field {
        DMI_NONE,
        DMI_BIOS_VENDOR,
        DMI_BIOS_VERSION,
        DMI_BIOS_DATE,
        DMI_SYS_VENDOR,
        DMI_PRODUCT_NAME,
        DMI_PRODUCT_VERSION,
        DMI_PRODUCT_SERIAL,
        DMI_PRODUCT_UUID,
        DMI_BOARD_VENDOR,
        DMI_BOARD_NAME,
        DMI_BOARD_VERSION,
        DMI_BOARD_SERIAL,
        DMI_BOARD_ASSET_TAG,
        DMI_CHASSIS_VENDOR,
        DMI_CHASSIS_TYPE,
        DMI_CHASSIS_VERSION,
        DMI_CHASSIS_SERIAL,
        DMI_CHASSIS_ASSET_TAG,
        DMI_STRING_MAX,
};

enum dmi_device_type {
        DMI_DEV_TYPE_ANY = 0,
        DMI_DEV_TYPE_OTHER,
        DMI_DEV_TYPE_UNKNOWN,
        DMI_DEV_TYPE_VIDEO,
        DMI_DEV_TYPE_SCSI,
        DMI_DEV_TYPE_ETHERNET,
        DMI_DEV_TYPE_TOKENRING,
        DMI_DEV_TYPE_SOUND,
        DMI_DEV_TYPE_IPMI = -1,
        DMI_DEV_TYPE_OEM_STRING = -2
};

struct dmi_header {
        u8 type;
        u8 length;
        u16 handle;
};

/*
 *      DMI callbacks for problem boards
 */
struct dmi_strmatch {
        u8 slot;
        char *substr;
};

struct dmi_system_id {
        int (*callback)(struct dmi_system_id *);
        const char *ident;
        struct dmi_strmatch matches[4];
        void *driver_data;
};

#define DMI_MATCH(a, b) { a, b }

struct dmi_device {
        struct list_head list;
        int type;
        const char *name;
        void *device_data;      /* Type specific data */
};

/* No CONFIG_DMI before 2.6.16 */
#if defined(CONFIG_DMI) || defined(CONFIG_X86_32)  

extern int dmi_check_system(struct dmi_system_id *list);
extern char * dmi_get_system_info(int field);
extern struct dmi_device * dmi_find_device(int type, const char *name,
        struct dmi_device *from);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
extern void dmi_scan_machine(void);
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
extern int dmi_get_year(int field);
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
extern int dmi_name_in_vendors(char *str);
#endif

#else

static inline int dmi_check_system(struct dmi_system_id *list) { return 0; }
static inline char * dmi_get_system_info(int field) { return NULL; }
static inline struct dmi_device * dmi_find_device(int type, const char *name,
        struct dmi_device *from) { return NULL; }
static inline int dmi_get_year(int year) { return 0; }
static inline int dmi_name_in_vendors(char *s) { return 0; }

#endif

#endif  /* __DMI_H__ */

#endif /* linux kernel < 2.6.22 */

#endif 
